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.

A135815 Row sums of triangle A135814 (number of coincidence-free m-tuple lists of length n).

Original entry on oeis.org

1, 1, 1, 2, 6, 43, 707, 26396, 2437224, 598846437, 419417521685, 904349062852310, 6075281872200844330, 140389254096848971143999, 10843844462460100434065782151, 3088707655477705662835120169107312
Offset: 0

Views

Author

Wolfdieter Lang, Jan 21 2008

Keywords

Crossrefs

Cf. A135816 (alternating row sums of A135814).

Formula

a(n) = Sum_{m=0..n} A135814(n,m), n>=0.

A135816 Alternating row sums of triangle A135814 (number of coincidence-free m-tuple lists of length n).

Original entry on oeis.org

1, -1, 1, -2, 2, 9, 231, -208, -903776, -143213213, 118835487821, 388585756132242, -521157743571990450, -72978076847525420725075, -1904341683955074815027626877, 1483881447421749524769255709488292, 1360468742213189927760243663613128043340
Offset: 0

Views

Author

Wolfdieter Lang, Jan 21 2008

Keywords

Crossrefs

Cf. A135815 (row sums of A135814).

Formula

a(n) = Sum_{m=0..n} A135814(n,m)*(-1)^m, n>=0.
Showing 1-2 of 2 results.

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

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