cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A094408 a(n) = Sum_{k = 0..n} 3^k*A085707(n,k).

Original entry on oeis.org

1, 1, 4, 37, 631, 17266, 692785, 38325925, 2795925136, 260056965205, 30038178784699, 4218296308789630, 707778995370264001, 139840360858571766121
Offset: 0

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Author

Philippe Deléham, Jun 04 2004

Keywords

Comments

Sum_{k = 0..n} x^k*A085707(n,k) give A006846(n), A005647(n), A000364(n) for x = 1, 2, 4 respectively.

Crossrefs

Cf. A085707.