A274628 -id:A274628 - cp's OEIS frontend

A274629 Partial sums of A274628.

1, 5, 12, 25, 40, 66, 91, 130, 170, 224, 273, 352, 415, 503, 591, 703, 796, 936, 1045, 1204, 1346, 1516, 1659, 1883, 2051, 2267, 2469, 2724, 2923, 3227, 3446, 3754, 4022, 4338, 4612, 5016, 5297, 5667, 6005, 6443, 6766, 7250, 7595, 8076, 8509, 8993, 9382, 9993

Offset: 1

N. J. A. Sloane, Jul 07 2016

nonn

Sandie Han, Ariane M. Masuda, Satyanand Singh and Johann Thiel, Orphans in Forests of Linear Fractional Transformations, Electronic Journal of Combinatorics, Vol. 23, No. 3 (2016), Article P3.6.

Cf. A274628.

More terms from Eric Rowland, May 26 2018

A350596 Coefficients of the expansion of Sum_{i,j,k>=1} x^(ijk)/((1-x^i)(1-x^j)(1-x^k)).

Original entry on oeis.org

1, 6, 15, 34, 54, 96, 130, 196, 255, 349, 417, 570, 652, 823, 954, 1180, 1299, 1602, 1732, 2089, 2280, 2659, 2820, 3375, 3541, 4078, 4321, 4963, 5139, 5970, 6115, 6982, 7233, 8116, 8325, 9544, 9634, 10780, 11040, 12385, 12465, 14091, 14071, 15730, 15976, 17596, 17580

Offset: 1

Seiichi Manyama, Jan 08 2022

nonn

Cf. A000005, A191829, A274628.

my(N=66, x='x+O('x^N)); Vec(sum(i=1, N, sum(j=1, N\i, sum(k=1, N\(i*j), x^(i*j*k)/((1-x^i)*(1-x^j)*(1-x^k))))))

cp's OEIS Frontend

A274629 Partial sums of A274628.

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A350596 Coefficients of the expansion of Sum_{i,j,k>=1} x^(ijk)/((1-x^i)(1-x^j)(1-x^k)).

Views

Author

Keywords

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PARI

cp's OEIS Frontend

A274629 Partial sums of A274628.

Views

Author

Keywords

Links

Crossrefs

Extensions

A350596 Coefficients of the expansion of Sum_{i,j,k>=1} x^(i*j*k)/((1-x^i)*(1-x^j)*(1-x^k)).

Views

Author

Keywords

Crossrefs

Programs

PARI

A350596 Coefficients of the expansion of Sum_{i,j,k>=1} x^(ijk)/((1-x^i)(1-x^j)(1-x^k)).