A039803 -id:A039803 - cp's OEIS frontend

A039800 Column 1 of Inverse partition triangle A038498.

1, -1, 0, 1, 0, 0, -1, -1, 0, 0, 1, 1, 2, 2, 1, 0, -1, -2, -3, -4, -5, -5, -5, -4, -3, -1, 2, 5, 8, 11, 14, 17, 18, 20, 20, 20, 18, 16, 11, 8, 0, -6, -15, -23, -34, -43, -54, -63, -73, -81, -88, -95, -98, -101, -99, -99, -89, -86, -70, -60, -38, -24, 8, 25, 62

Offset: 1

Christian G. Bower, Feb 15 1999

sign

Cf. A038498, A039801, A039802, A039803, A039804.

tp(n, k) = if (n<1, 0, if (k<1, 0, if (k == n, 1, if (k > n, 0, tp(n-1, k-1) + tp(n-k, k)))));
lista(nn) = {my(mtp = matrix(nn, nn, n, k, tp(n, k)), mtpi = mtp^(-1)); vector(nn, k, mtpi[k, 1]);}  \\ Michel Marcus, Feb 27 2021

a(60) onward corrected by Sean A. Irvine, Feb 26 2021

A039804 Column 5 of Inverse partition triangle A038498.

Original entry on oeis.org

1, -1, -1, 0, 0, 1, 1, 2, 0, 0, -1, -1, -2, -2, -2, -4, -1, -2, 0, 0, 3, 4, 6, 6, 8, 8, 10, 10, 9, 9, 7, 5, 2, 0, -7, -10, -18, -22, -29, -32, -41, -43, -49, -50, -54, -53, -54, -50, -46, -38, -30, -18, -6, 8, 25, 43, 62, 82, 108, 128, 155

Offset: 5

Christian G. Bower, Feb 15 1999

sign

Cf. A039800-A039803.

a(64) corrected by Sean A. Irvine, Feb 27 2021

cp's OEIS Frontend

A039800 Column 1 of Inverse partition triangle A038498.

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