A024531 a(n) = [ (2nd elementary symmetric function of P(n))/(first elementary symmetric function of P(n)) ], where P(n) = {1, p(1), p(2), ..., p(n-1)}, where p(0) = 1.

0, 1, 3, 6, 10, 16, 23, 32, 42, 55, 70, 87, 106, 126, 148, 173, 201, 230, 262, 296, 331, 369, 409, 452, 499, 548, 598, 650, 703, 758, 820, 883, 950, 1018, 1091, 1164, 1241, 1321, 1402, 1487, 1575, 1664, 1757, 1852

Offset

2,3

Links

Table of n, a(n) for n=2..45.

Crossrefs

Sequence in context: A025714 A025729 A011913 * A034198 A121776 A310085

Adjacent sequences: A024528 A024529 A024530 * A024532 A024533 A024534

Keyword

nonn

Author

Clark Kimberling

Status

approved