The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

A065648

a(0) = 1 and for n > 0: a(n) = number of indices 0 <= i <= n with A033307(i)=A033307(n), where A033307 is the sequence of decimal digits of Champernowne's constant 0.123456789101112131415...