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 A144882 Row sums of triangle A144881 (S1hat(3)) and of array A144880 (M31hat(3)). 2
 1, 4, 16, 85, 481, 3352, 25420, 223393, 2157565, 23241244, 272933680, 3496821133, 48307202761, 717473918560, 11381186498836, 192155770419673, 3438337498017781, 65004294514876996, 1294456866053992600, 27081588485949257605 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..20. FORMULA a(n) = Sum_{m=1..n} A144881(n,m), n>=1. CROSSREFS Cf. A144880, A144881. Sequence in context: A333370 A125793 A121145 * A298012 A006681 A074876 Adjacent sequences: A144879 A144880 A144881 * A144883 A144884 A144885 KEYWORD nonn,easy AUTHOR Wolfdieter Lang, Oct 09 2008 STATUS approved

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Last modified December 9 09:12 EST 2023. Contains 367690 sequences. (Running on oeis4.)