A147754 Terms of this sequence are equal to gcd between two polynomials P1(n)=(512*n^4+1024*n^3+712*n^2+194*n+15) and P2(n)=(120*n^2+151*n+47) which are used in the BBP formula

1, 3, 1, 5, 3, 1, 1, 9, 5, 1, 3, 1, 1, 15, 1, 1, 9, 1, 5, 3, 1, 1, 3, 25, 1, 9, 1, 1, 15, 1, 1, 3, 1, 5, 9, 1, 1, 3, 5, 1, 3, 1, 1, 45, 1, 1, 3, 1, 25, 3, 1

Offset

0,2

Links

Table of n, a(n) for n=0..50.

Prog

(PARI) j=[]; for (n=0, 50, j=concat(j, gcd(a(n), b(n)))); j

Crossrefs

Sequence in context: A099547 A137758 A340530 * A360325 A084305 A347066

Adjacent sequences: A147751 A147752 A147753 * A147755 A147756 A147757

Keyword

nonn

Author

Alexander R. Povolotsky, Nov 11 2008

Status

approved