A220656 The positions of those permutations in A030298 where the first element is not fixed.

3, 6, 7, 8, 9, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100

Offset

1,1

Comments

Correspondingly, gives the positions of those terms in A030299 whose first digit is not 1, as long as the decimal encoding system employed is valid.

Links

Antti Karttunen, Table of n, a(n) for n = 1..5039

Formula

a(n) = A003422(1+A084558(n)) + A000142(A084558(n)) + A212598(n).

a(n) = A220655(n)+1.

Prog

(Scheme): (define (A220656 n) (+ (A003422 (+ 1 (A084558 n))) (A000142 (A084558 n)) (A212598 n)))

Crossrefs

Complement: A220696. Cf. A081291.

Sequence in context: A189822 A051205 A168114 * A324143 A050244 A295566

Adjacent sequences: A220653 A220654 A220655 * A220657 A220658 A220659

Keyword

nonn

Author

Antti Karttunen, Dec 17 2012

Status

approved