A051481 a(n+1) = a(n)^2 + n*(n+3)*a(n).

1, 5, 75, 6975, 48845925, 2385926342942625, 5692644513947697441166560792375, 32406201562178816446780055667981084047163520943188247113606875

Offset

0,2

Comments

Each term divides the next.

Links

Table of n, a(n) for n=0..7.

S. A. Fulling, Large Numbers, the Chinese Remainder Theorem, and the Circle of Fifths, arXiv:quant-ph/9911051

Example

75=5^2+2*5*5=25+50.

Mathematica

nxt[{n_, a_}]:={n+1, a^2+a(n+1)(n+4)}; NestList[nxt, {0, 1}, 10][[All, 2]] (* Harvey P. Dale, Aug 14 2021 *)

Crossrefs

Sequence in context: A303125 A332714 A258784 * A277296 A364323 A011918

Adjacent sequences: A051478 A051479 A051480 * A051482 A051483 A051484

Keyword

easy,nonn

Author

Dennis S. Kluk (mathemagician(AT)ameritech.net)

Extensions

Corrected by Harvey P. Dale, Aug 14 2021

Status

approved