A088861 Third column of triangle in A088643.

1, 2, 3, 2, 5, 6, 5, 8, 9, 8, 9, 10, 9, 14, 15, 16, 13, 14, 17, 20, 21, 20, 21, 22, 21, 22, 23, 24, 29, 30, 31, 28, 29, 32, 35, 36, 37, 34, 35, 38, 39, 40, 39, 40, 41, 42, 41, 42, 47, 50, 51, 50, 53, 54, 53, 54, 55, 56, 57, 58, 59, 50, 51, 62, 63, 64, 63, 68, 69, 70, 71, 72, 65

Offset

1,2

Links

Table of n, a(n) for n=1..73.

Crossrefs

Cf. A088643. A088631 gives second column.

Sequence in context: A218613 A164912 A289386 * A088631 A086184 A363484

Adjacent sequences: A088858 A088859 A088860 * A088862 A088863 A088864

Keyword

nonn,easy

Author

N. J. A. Sloane, Nov 26 2003

Extensions

More terms from John W. Layman, Dec 04 2003

Status

approved