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A102433 Number of distinct polynomials of degree < n and coefficients > 0 with solutions k >= 1 such that p(k) = n. 4

%I #3 Mar 30 2012 17:38:11

%S 1,4,12,40,132,472,1727,6452,24330,92404,352743,1352116,5200339,

%T 20058347,77558811,300540260,1166803176,4537567732,17672631983,

%U 68923264512,269128937327,1052049481983,4116715363924,16123801841703

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

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

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

%Y Cf. A102430, A102431, A102432, A102434.

%K easy,nonn

%O 1,2

%A _Marc LeBrun_, Jan 08 2005

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Last modified July 30 12:09 EDT 2024. Contains 374743 sequences. (Running on oeis4.)