A350210 a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero n-gonal pyramidal numbers in exactly n ways, or 0 if no such integer exists.

140, 490, 1055, 1872, 2610, 4255, 5011, 8708, 7497, 10819, 12860, 15636, 18055, 24275, 27373, 28146, 30826, 38178, 41849, 44025, 36165, 47621, 57896, 64648, 60064, 67125, 71975, 81820, 77701, 91584, 91320, 99835, 98916, 108686, 112606, 123180, 120919, 142270

Offset

3,1

Links

Martin Ehrenstein, Table of n, a(n) for n = 3..1002

Eric Weisstein's World of Mathematics, Pyramidal Number

Example

For n = 3: 140 = 1 + 20 + 35 + 84 = 56 + 84 = 20 + 120. - Martin Ehrenstein, Jan 09 2022

Crossrefs

Cf. A080851, A350205, A350206, A350207, A350209, A350397.

Sequence in context: A255776 A242319 A010080 * A250801 A184386 A184378

Adjacent sequences: A350207 A350208 A350209 * A350211 A350212 A350213

Keyword

nonn

Author

Ilya Gutkovskiy, Dec 19 2021

Extensions

a(35)-a(40) from Martin Ehrenstein, Jan 09 2022

Status

approved