A278539 a(n) = index of the column where n is located in array A278505.

1, 2, 1, 3, 2, 4, 1, 5, 2, 6, 3, 7, 1, 8, 2, 9, 4, 10, 1, 11, 3, 12, 5, 13, 2, 14, 1, 15, 6, 16, 2, 17, 4, 18, 7, 19, 3, 20, 1, 21, 8, 22, 2, 23, 5, 24, 9, 25, 1, 26, 3, 27, 10, 28, 4, 29, 6, 30, 11, 31, 2, 32, 1, 33, 12, 34, 2, 35, 7, 36, 13, 37, 3, 38, 5, 39, 14, 40, 1, 41, 8, 42, 15, 43, 4, 44, 2, 45, 16, 46, 1, 47, 9, 48, 17, 49, 6, 50, 3, 51, 18, 52, 2, 53

Offset: 1

Author

Antti Karttunen, Nov 23 2016

Keywords

• nonn

Comments

Ordinal transform of A278538 (as the rows of A278505 are strictly growing).

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10707

Crossrefs

One more than A278529.

Cf. A278505, A278538, A278537.

Programs

Scheme

(define (A278539 n) (+ 1 (A278529 n)))

Formula

a(n) = 1 + A278529(n).