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 A334013 a(n) is the least integer that is the sum of two nonzero tetrahedral numbers in exactly n ways. 0
 2, 140, 102424, 43322844421220 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Eric Weisstein's World of Mathematics, Tetrahedral Number EXAMPLE Let Te(k) denote the k-th tetrahedral number, then a(1) = Te(1) + Te(1); a(2) = Te(7) + Te(6) = Te(8) + Te(4); a(3) = Te(82) + Te(34) = Te(83) + Te(27) = Te(84) + Te(7); a(4) = Te(60500) + Te(33760) = Te(53311) + Te(47682) = Te(63383) + Te(17423) = Te(63495) + Te(15790); CROSSREFS Cf. A000292, A010329, A011541, A053587. Sequence in context: A220513 A120814 A221601 * A115890 A356747 A215187 Adjacent sequences: A334010 A334011 A334012 * A334014 A334015 A334016 KEYWORD nonn,hard,more AUTHOR Ilya Gutkovskiy, Apr 12 2020 EXTENSIONS a(4) from Giovanni Resta, Apr 13 2020 STATUS approved

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Last modified March 28 17:47 EDT 2023. Contains 361596 sequences. (Running on oeis4.)