A219637 Numbers that occur twice in A219641.

0, 2, 4, 7, 9, 12, 14, 16, 20, 22, 24, 27, 29, 33, 35, 37, 40, 42, 45, 47, 49, 54, 56, 58, 61, 63, 66, 68, 70, 74, 76, 78, 81, 83, 88, 90, 92, 95, 97, 100, 102, 104, 108, 110, 112, 115, 117, 121, 123, 125, 128, 130, 133, 135, 137, 143, 145, 147, 150, 152, 155

Offset

1,2

Links

A. Karttunen, Table of n, a(n) for n = 1..10000

Prog

(Scheme) ;; With Antti Karttunen's Intseq-library:
(define (Aux_for219637 n) (A219641 (A219636 n)))
(define A219637 (DISTINCT-VALS 1 1 Aux_for219637))

Crossrefs

Cf. A219636, A219639, A219641.

Sequence in context: A175884 A003151 A189939 * A189470 A189681 A329834

Adjacent sequences: A219634 A219635 A219636 * A219638 A219639 A219640

Keyword

nonn

Author

Antti Karttunen, Nov 24 2012

Status

approved