A093655 - OEIS

A093655

First column of lower triangular matrix A093654.

1, 1, 1, 2, 1, 2, 2, 7, 1, 2, 2, 7, 2, 7, 7, 41, 1, 2, 2, 7, 2, 7, 7, 41, 2, 7, 7, 41, 7, 41, 41, 397, 1, 2, 2, 7, 2, 7, 7, 41, 2, 7, 7, 41, 7, 41, 41, 397, 2, 7, 7, 41, 7, 41, 41, 397, 7, 41, 41, 397, 41, 397, 397, 6377

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OFFSET

1,4

COMMENTS

Related to the number of tournament sequences (A008934).

a(n) equals the number of tournament sequences (A008934) of length A000120(n-1), which is the number of 1's in the binary expansion of n-1.

LINKS

Table of n, a(n) for n=1..64.

FORMULA

a(2^n) = A008934(n) for n>=0.

a(n) = A008934(A000120(n-1)) for n>=1.

CROSSREFS

Cf. A008934, A093655.

Cf. A000120.

Sequence in context: A081727 A000020 A077014 * A023140 A145859 A145863

Adjacent sequences: A093652 A093653 A093654 * A093656 A093657 A093658

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Apr 08 2004

STATUS

approved