A282711 - OEIS

A282711

a(n) = number of terms of A003052 that are <= n.

1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12

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OFFSET

1,3

LINKS

Table of n, a(n) for n=1..92.

U. Zannier, On the distribution of self-numbers, Proc. Amer. Math. Soc. 85 (1982), 10-14.

FORMULA

Zannier shows that a(n) = L*n + O(*log x)^2), where L is approximately 10.227...

MAPLE

# Assumes the array b52 contains a list of the terms in A003052.

p:=[]; t:=1; m:=b52[t]; c:=1;

for n from 1 to 1000 do