A102433 Number of distinct polynomials of degree < n and coefficients > 0 with solutions k >= 1 such that p(k) = n.

1, 4, 12, 40, 132, 472, 1727, 6452, 24330, 92404, 352743, 1352116, 5200339, 20058347, 77558811, 300540260, 1166803176, 4537567732, 17672631983, 68923264512, 269128937327, 1052049481983, 4116715363924, 16123801841703

Offset

1,2

Links

Table of n, a(n) for n=1..24.

Formula

a(n) = A102431(n) + A102430(n, 1) - 1

Example

a(2)=4 distinct polynomials: 2 (for all n), n+1, 2n (for n=1), n (for n=2).

Crossrefs

Cf. A102430, A102431, A102432, A102434.

Sequence in context: A275863 A289653 A081875 * A221652 A259806 A100320

Adjacent sequences: A102430 A102431 A102432 * A102434 A102435 A102436

Keyword

easy,nonn

Author

Marc LeBrun, Jan 08 2005

Status

approved