A023419 a(n) = c([ n/2 ]) + c([ n/3 ]) + ... + c([ n/n ]) for n >=3, where a(1) = 1, a(2) = 2 and c(n) = n-th number not in sequence a( ).

1, 2, 6, 10, 13, 18, 21, 27, 31, 36, 39, 47, 50, 56, 61, 68, 71, 79, 82, 90, 96, 101, 104, 114, 118, 124, 130, 139, 142, 152, 155, 163, 168, 173, 179, 191, 194, 199, 205, 216, 219, 229, 232, 240, 249, 255, 258, 270, 275, 282, 287, 296, 299, 310

Offset

1,2

Links

Table of n, a(n) for n=1..54.

Crossrefs

Sequence in context: A190701 A184918 A332987 * A183990 A049838 A074929

Adjacent sequences: A023416 A023417 A023418 * A023420 A023421 A023422

Keyword

nonn

Author

Clark Kimberling

Status

approved