A339330 Sums of antidiagonals in A283681.

1, 4, 9, 16, 27, 41, 57, 77, 103, 133, 167, 205, 249, 301, 358, 418, 486, 560, 642, 734, 832, 932, 1038, 1156, 1282, 1418, 1566, 1721, 1880, 2043, 2215, 2403, 2601, 2811, 3035, 3267, 3505, 3751, 4003, 4267, 4551, 4847, 5157, 5483, 5818, 6157, 6508, 6871, 7242

Offset

1,2

Links

Table of n, a(n) for n=1..49.

Rémy Sigrist, PARI program for A339330

Formula

a(n) = Sum_{k = 1..n} k * A283681(n+1-k).

Prog

(PARI) See Links section.

Crossrefs

Cf. A283681.

Sequence in context: A237589 A138981 A138993 * A008019 A029896 A301198

Adjacent sequences: A339327 A339328 A339329 * A339331 A339332 A339333

Keyword

nonn

Author

Rémy Sigrist, Nov 30 2020

Status

approved