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.

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A321628 Row sums of A321627.

Original entry on oeis.org

1, 2, 8, 44, 308, 2660, 27764, 343604, 4948196, 81477188, 1510645556, 31133831540, 705725536868, 17441324917508, 466571232425012, 13427966856358196, 413627214916715492, 13576185998718106820, 472963964292142718516, 17429043637241263344116, 677320641352700988657764
Offset: 0

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Author

Peter Luschny, Dec 07 2018

Keywords

Crossrefs

Programs

  • Maple
    b := proc(n) option remember; if n = 0 then 2 else
    add(doublefactorial(2*k-1)*b(n-k), k=1..n) fi end:
    a := n -> if n = 0 then return 1 else b(n) end: seq(a(n), n=0..20);
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