The On-Line Encyclopedia of Integer Sequences (OEIS)

A151667 revision #13

A151667

Number of partitions of n into distinct powers of 5.

1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

LINKS

Table of n, a(n) for n=0..104.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

FORMULA

G.f.: Prod_{k >= 0 } (1+x^(5^k)). Exponents give A033042.

G.f. A(x) satisfies: A(x) = (1 + x) * A(x^5). - Ilya Gutkovskiy, Aug 12 2019

MATHEMATICA

m = 130; A[_] = 1;

Do[A[x_] = (1+x) A[x^5] + O[x]^m // Normal, {m}];

CoefficientList[A[x], x] (* Jean-François Alcover, Oct 19 2019 *)

CROSSREFS

For generating functions Prod_{k>=0} (1+a*x^(b^k)) for the following values of (a,b) see: (1,2) A000012 and A000027, (1,3) A039966 and A005836, (1,4) A151666 and A000695, (1,5) A151667 and A033042, (2,2) A001316, (2,3) A151668, (2,4) A151669, (2,5) A151670, (3,2) A048883, (3,3) A117940, (3,4) A151665, (3,5) A151671, (4,2) A102376, (4,3) A151672, (4,4) A151673, (4,5) A151674.

Cf. A039966, A151666, A033042.

Sequence in context: A373991 A266892 A267152 * A241759 A298249 A286993

Adjacent sequences: A151664 A151665 A151666 * A151668 A151669 A151670

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 30 2009

STATUS

editing