A171895 Number of distinct terms among the first n terms of A181391.

1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20

Offset

1,3

Links

N. J. A. Sloane, Table of n, a(n) for n = 1..10000

Crossrefs

Partial sums of A171894. Essentially A171896 - 1. Cf. A181391.

Sequence in context: A224458 A097688 A262685 * A025785 A227002 A343118

Adjacent sequences: A171892 A171893 A171894 * A171896 A171897 A171898

Keyword

nonn

Author

Vinay Vaishampayan and N. J. A. Sloane, Oct 19 2010

Status

approved