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A357586
Triangle read by rows. Convolution triangle of A002467 (number of permutations with fixed points).
0
1, 0, 1, 0, 1, 1, 0, 4, 2, 1, 0, 15, 9, 3, 1, 0, 76, 38, 15, 4, 1, 0, 455, 198, 70, 22, 5, 1, 0, 3186, 1182, 378, 112, 30, 6, 1, 0, 25487, 8115, 2274, 629, 165, 39, 7, 1, 0, 229384, 63266, 15439, 3840, 965, 230, 49, 8, 1, 0, 2293839, 554656, 117921, 25966, 6006, 1401, 308, 60, 9, 1
OFFSET
0,8
EXAMPLE
[0] 1;
[1] 0, 1;
[2] 0, 1, 1;
[3] 0, 4, 2, 1;
[4] 0, 15, 9, 3, 1;
[5] 0, 76, 38, 15, 4, 1;
[6] 0, 455, 198, 70, 22, 5, 1;
[7] 0, 3186, 1182, 378, 112, 30, 6, 1;
[8] 0, 25487, 8115, 2274, 629, 165, 39, 7, 1;
[9] 0, 229384, 63266, 15439, 3840, 965, 230, 49, 8, 1;
MAPLE
# Uses function PMatrix from A357368.
PMatrix(10, n -> simplify(GAMMA(n+1) - GAMMA(n+1, -1)*exp(-1)));
CROSSREFS
Cf. A002467.
Sequence in context: A266921 A248721 A110324 * A266861 A265435 A277004
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Oct 09 2022
STATUS
approved