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 1-3 of 3 results.

A152799 Column 2 of triangle A152798; first differences of A122889.

Original entry on oeis.org

1, 1, 3, 6, 15, 40, 113, 348, 1148, 4045, 15203, 60710, 256688, 1145887, 5386283, 26590338, 137537012, 743766652, 4196681423, 24661702224, 150676068558, 955611495432, 6281965526173, 42745748797360, 300690981532778
Offset: 0

Views

Author

Paul D. Hanna, Dec 23 2008

Keywords

Crossrefs

Cf. A152798, A122889.

A152808 Column 3 of triangle A152798; a(n) = A152798(n+3,3).

Original entry on oeis.org

1, 1, 4, 10, 29, 93, 310, 1106, 4205, 16912, 71858, 321921, 1516429, 7493126, 38758968, 209453249, 1180293354, 6923457745, 42206892713, 267002169884, 1750266527588, 11873506488390, 83253781992093, 602667751464027
Offset: 0

Views

Author

Paul D. Hanna, Jan 01 2009

Keywords

Crossrefs

Cf. A152798; A122889, A152799, A152809.

Formula

a(n) = A152798(n+2,3) + 3*A152798(n+2,4) + 3*A152798(n+2,5) + A152798(n+2,6).

A152809 Column 4 of triangle A152798; a(n) = A152798(n+4,4).

Original entry on oeis.org

1, 1, 5, 15, 49, 180, 685, 2748, 11683, 52262, 245357, 1207538, 6217803, 33428738, 187323142, 1092328063, 6618105311, 41600580908, 270931087106, 1825820975565, 12716770294407, 91437668751232, 678020392413506, 5179601279549207
Offset: 0

Views

Author

Paul D. Hanna, Jan 01 2009

Keywords

Crossrefs

Cf. A152798; A122889, A152799, A152808.

Formula

a(n) = A152798(n+3,4) + 4*A152798(n+3,5) + 6*A152798(n+3,6) + 4*A152798(n+3,7) + A152798(n+3,8) for n>0 with a(0)=1.
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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