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Revision History for A034349 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A034349 Number of binary [ n,8 ] codes without 0 columns.
(history; published version)
#20 by Joerg Arndt at Wed Oct 09 02:48:46 EDT 2019
STATUS

reviewed

approved

#19 by Michel Marcus at Wed Oct 09 01:50:44 EDT 2019
STATUS

proposed

reviewed

#18 by Petros Hadjicostas at Mon Oct 07 14:46:00 EDT 2019
STATUS

editing

proposed

#17 by Petros Hadjicostas at Mon Oct 07 14:39:39 EDT 2019
PROG

print(A034253col(8, 30)) #)) # _Petros Hadjicostas_, Oct 07 2019

Discussion
Mon Oct 07 14:43
Petros Hadjicostas: Soon (not today) I need to start working on A034362, A034361, A034360, etc. (These are the sequences whose first differences give us the columns of A034253.)
#16 by Petros Hadjicostas at Mon Oct 07 14:36:11 EDT 2019
CROSSREFS

Column k=8 of A034253 and first differences of A034362.

#15 by Petros Hadjicostas at Mon Oct 07 14:34:44 EDT 2019
EXTENSIONS

More terms from Petros Hadjicostas, Oct 07 2019

#14 by Petros Hadjicostas at Mon Oct 07 14:34:08 EDT 2019
CROSSREFS

Cf. A034253A034254, A034344-., A034345, A034346, A034347, A034348, A253186.

#13 by Petros Hadjicostas at Mon Oct 07 14:24:01 EDT 2019
COMMENTS

To find the g.f., modify the Sage program below (cf. function f). It is very complicated to write it here. - Petros Hadjicostas, Oct 07 2019

Discussion
Mon Oct 07 14:33
Petros Hadjicostas: For k = 4, 5, 6, I put the g.f.'s in txt files, but for k=7 and k=8 I did not because they are huge and I am afraid I will copy and paste them incorrectly (even though I can get them in Sage).
#12 by Petros Hadjicostas at Mon Oct 07 13:58:47 EDT 2019
DATA

0, 0, 0, 0, 0, 0, 0, 1, 8, 47, 277, 1775, 12616, 102445, 957357, 10174566, 119235347, 1482297912, 18884450721, 240477821389, 3012879828566, 36800049400028, 436068618826236, 5001537857507095, 55482177298724426, 595303034603214108, 6181562837200509792, 62170512250565592346, 606176783272008150175

#11 by Petros Hadjicostas at Mon Oct 07 13:58:04 EDT 2019
DATA

0, 0, 0, 0, 0, 0, 0, 1, 8, 47, 277, 1775, 12616, 102445, 957357, 10174566, 119235347, 1482297912, 18884450721, 240477821389, 3012879828566, 36800049400028, 436068618826236, 5001537857507095, 55482177298724426, 595303034603214108, 6181562837200509792, 62170512250565592346, 606176783272008150175

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Last modified August 30 13:06 EDT 2024. Contains 375543 sequences. (Running on oeis4.)