

A333932


a(n) is the least integer that is 4dimensional pyramidal in exactly n ways.


0



5, 15, 35, 140, 1820, 11375, 820820, 19019000, 10790015600, 1568726956160, 7278234628665, 7271181889157550
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OFFSET

1,1


COMMENTS

a(n) has exactly n representations as an 4dimensional pyramidal number P(m, k) = binomial(k + 2, 3)*(k*(m  2)  m + 6) / 4, with m > 2, k > 1.


LINKS



EXAMPLE

a(3) = 35 because 35 is the least integer which is 4dimensional pyramidal in 3 ways (35 = P(3, 4) = P(7, 3) = P(33, 2)).


CROSSREFS



KEYWORD

nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



