A091181 A091180 indexed by A000040.

4, 6, 8, 11, 12, 19, 29, 31, 34, 37, 42, 46, 47, 63, 68, 75, 80, 93, 95, 100, 105, 106, 115, 133, 136, 138, 141, 145, 151, 157, 159, 167, 169, 175, 187, 197, 210, 211, 217, 221, 222, 232, 233, 247, 257, 263, 274, 275, 279, 306, 308, 327, 335, 337, 339, 355, 365

Offset

1,1

Links

Table of n, a(n) for n=1..57.

Formula

a(n) = k such that A000040(k) = A091180(n).

a(n) = A000720(A091180(n)). - Michel Marcus, Aug 06 2021

Crossrefs

Cf. A088878, A091179, A091180.

Sequence in context: A091178 A270448 A152019 * A189462 A047290 A225002

Adjacent sequences: A091178 A091179 A091180 * A091182 A091183 A091184

Keyword

nonn,easy

Author

Ray Chandler, Dec 27 2003

Extensions

Offset changed to 1 by Jinyuan Wang, Aug 06 2021

Status

approved