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 A361476 Antidiagonal sums of A361475. 1
 0, 1, 4, 12, 34, 99, 308, 1040, 3820, 15197, 65060, 297828, 1449742, 7468527, 40555732, 231335944, 1381989864, 8623700793, 56078446596, 379233142780, 2662013133274, 19362917621979, 145719550012276, 1133023004941248, 9090156910550084, 75161929739797493, 639793220877941476 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..26. FORMULA a(n) = Sum_{k=2..n+2} (k^(n-k+2) - 1)/(k - 1). a(n) ~ A026898(n). a(n) = Sum_{k=0..n} k * A104878(n,k). - Alois P. Heinz, Dec 05 2023 MATHEMATICA A361475[n_, k_]:=(k^n-1)/(k-1); a[n_]:=Sum[A361475[n-k+2, k], {k, 2, n+2}]; Array[a, 27, 0] CROSSREFS Cf. A026898, A104878, A361475. Sequence in context: A115390 A005056 A014143 * A077994 A077843 A061703 Adjacent sequences: A361473 A361474 A361475 * A361477 A361478 A361479 KEYWORD nonn AUTHOR Stefano Spezia, Mar 13 2023 STATUS approved

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Last modified September 10 03:08 EDT 2024. Contains 375770 sequences. (Running on oeis4.)