A103481 Diagonal sums of A103462.

1, 1, 2, 3, 4, 6, 9, 16, 31, 69, 168, 447, 1274, 3862, 12351, 41472, 145661, 533745, 2036158, 8071795, 33192800, 141351726, 622384741, 2829417288, 13263528363, 64038928741, 318121600708, 1624347614751, 8517247764150, 45822087138894

Offset

0,3

Links

Table of n, a(n) for n=0..29.

Formula

a(n)=sum{k=0..floor(n/2), k^(n-2k)+1-0^(n-2k)}; a(n)=sum{k=0..floor(n/2), k^(n-2k)}+floor((n+1)/2).

Crossrefs

Sequence in context: A331022 A256774 A213682 * A215285 A375621 A275173

Adjacent sequences: A103478 A103479 A103480 * A103482 A103483 A103484

Keyword

easy,nonn

Author

Paul Barry, Feb 07 2005

Status

approved