The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A215836 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A215836

Sixth derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.
(history; published version)

#8 by Alois P. Heinz at Fri Oct 31 21:38:23 EDT 2014

STATUS

editing

approved

#7 by Alois P. Heinz at Fri Oct 31 21:38:19 EDT 2014

MAPLE

seq (A(6, n), n=1..100);

STATUS

approved

editing

#6 by Alois P. Heinz at Fri Aug 24 12:30:29 EDT 2012

STATUS

proposed

approved

#5 by Alois P. Heinz at Fri Aug 24 12:30:16 EDT 2012

STATUS

editing

proposed

#4 by Alois P. Heinz at Fri Aug 24 12:30:06 EDT 2012

CROSSREFS

Row n=5 6 of A215703.

#3 by Alois P. Heinz at Fri Aug 24 11:45:34 EDT 2012

LINKS

Alois P. Heinz, <a href="/A215836/b215836.txt">Table of n, a(n) for n = 1..7813</a>

#2 by Alois P. Heinz at Fri Aug 24 11:44:30 EDT 2012

NAME

allocated for Alois P. Heinz

Sixth derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.

DATA

0, 54, 1188, 954, 8322, 4908, 5034, 2934, 31776, 17742, 10428, 13968, 8688, 15174, 8814, 6714, 4374, 87990, 50496, 29682, 35382, 24042, 22008, 14928, 31968, 20268, 14988, 10848, 34974, 21474, 13314, 15114, 10974, 13014, 8874, 6534, 5094, 200244, 120330, 72456

OFFSET

1,2

COMMENTS

For the ordering of functions f_n see A215703.

MAPLE

# load programs from A215703, then:

seq (A(6, n), n=1..100);

CROSSREFS

Row n=5 of A215703.

Number of distinct values of a(n) taken for functions with m x's: A199883.

Cf. A000081, A087803.

KEYWORD

allocated

nonn

AUTHOR

Alois P. Heinz, Aug 24 2012

STATUS

approved

editing

#1 by Alois P. Heinz at Fri Aug 24 10:52:27 EDT 2012

NAME

allocated for Alois P. Heinz

KEYWORD

allocated

STATUS

approved