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.

Showing 1-2 of 2 results.

A174459 Partial sums of A006143.

Original entry on oeis.org

0, 0, 0, 1, 1, 1, 3, 10, 22, 36, 72, 167, 393, 894, 1950, 4327, 9775
Offset: 4

Views

Author

Jonathan Vos Post, Mar 20 2010

Keywords

Crossrefs

Cf. A006143.

Formula

a(n) = Sum_{i=4..n} A006143(i).

A002976 Number of certain self-avoiding walks with n steps on square lattice (see reference for precise definition).

Original entry on oeis.org

0, 1, 0, 2, 0, 5, 9, 21, 42, 76, 174, 396, 888, 2023, 4345, 9921, 22566
Offset: 4

Views

Author

Keywords

References

  • N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Crossrefs

Formula

a(n) = A006142(n)+2*A006143(n)+A006144(n). - R. J. Mathar, Oct 22 2007
Showing 1-2 of 2 results.