The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A136506 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A136506

a(n) = binomial(2^n + 2, n).
(history; published version)

#13 by N. J. A. Sloane at Sun Mar 14 20:40:30 EDT 2021

STATUS

proposed

approved

#12 by G. C. Greubel at Sun Mar 14 19:33:14 EDT 2021

STATUS

editing

proposed

#11 by G. C. Greubel at Sun Mar 14 19:32:32 EDT 2021

NAME

a(n) = Cbinomial(2^n + 2, n).

LINKS

G. C. Greubel, <a href="/A136506/b136506.txt">Table of n, a(n) for n = 0..50</a>

MAPLE

A136506:= n-> binomial(2^n+2, n); seq(A136506(n), n=0..20); # G. C. Greubel, Mar 14 2021

PROG

(Sage) [binomial(2^n +2, n) for n in (0..20)] # G. C. Greubel, Mar 14 2021

(Magma) [Binomial(2^n +2, n): n in [0..20]]; // G. C. Greubel, Mar 14 2021

CROSSREFS

Cf. Sequences of the form binomial(2^n +p*n +q, n): A136556 (0,-1), A014070 (C(2^n, n)0,0), A136505 (C0,1), this sequence (0,2), A060690 (1,-1), A132683 (1,0), A132684 (1,1), A132685 (2,0), A132686 (2^n+,1), A132687 (3,-1, n), A132688 (3,0), A132689 (3,1); A136507.

Cf. A136507, A136555.

STATUS

approved

editing

#10 by Vaclav Kotesovec at Sat Jul 02 06:59:03 EDT 2016

STATUS

editing

approved

#9 by Vaclav Kotesovec at Sat Jul 02 06:58:58 EDT 2016

FORMULA

a(n) ~ 2^(n^2) / n!. - Vaclav Kotesovec, Jul 02 2016

STATUS

approved

editing

#8 by Joerg Arndt at Sat Feb 15 13:22:38 EST 2014

STATUS

proposed

approved

#7 by Jon E. Schoenfield at Sat Feb 15 13:00:50 EST 2014

STATUS

editing

proposed

#6 by Jon E. Schoenfield at Sat Feb 15 13:00:48 EST 2014

MATHEMATICA

Table[Binomial[2^n+2, n], {n, 0, 20}] (* Harvey P. Dale, June Jun 20 2011 *)

STATUS

approved

editing

#5 by Charles R Greathouse IV at Thu Nov 21 12:49:17 EST 2013

MATHEMATICA

Table[Binomial[2^n+2, n], {n, 0, 20}] (* From _Harvey P. Dale, _, June 20 2011 *)

Discussion

Thu Nov 21

12:49

OEIS Server: https://oeis.org/edit/global/2062

#4 by Russ Cox at Fri Mar 30 18:37:08 EDT 2012

AUTHOR

_Paul D. Hanna (pauldhanna(AT)juno.com), _, Jan 01 2008

Discussion

Fri Mar 30

18:37

OEIS Server: https://oeis.org/edit/global/213