A138671 Indices of 1's in Stewart's choral sequence.

2, 5, 7, 8, 11, 14, 16, 17, 20, 22, 23, 25, 26, 29, 32, 34, 35, 38, 41, 43, 44, 47, 49, 50, 52, 53, 56, 59, 61, 62, 65, 67, 68, 70, 71, 74, 76, 77, 79, 80, 83, 86, 88, 89, 92, 95, 97, 98, 101, 103, 104

Offset

0,1

Links

Table of n, a(n) for n=0..50.

Formula

3^{m+1}n+(5(3^m)-1)/2 for m,n in {0,1,2,...}

Crossrefs

Cf. A116178, A138670.

Sequence in context: A111199 A359381 A276545 * A286693 A032724 A153308

Adjacent sequences: A138668 A138669 A138670 * A138672 A138673 A138674

Keyword

easy,nonn

Author

Joel Reyes Noche (joel.noche(AT)up.edu.ph), Mar 26 2008

Status

approved