A120244 a(1) = 1. a(m(m+1)/2 + k) = a(m) + k, 1 <= k <= m+1, m >= 1.

1, 2, 3, 3, 4, 5, 4, 5, 6, 7, 4, 5, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 9, 10, 11, 12, 5, 6, 7, 8, 9, 10, 11, 12, 6, 7, 8, 9, 10, 11, 12, 13, 14, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 6, 7, 8, 9, 10, 11, 12

Offset: 1

Author

Leroy Quet, Jun 12 2006

Keywords

• easy
• nonn

Links

• Kevin Ryde, Table of n, a(n) for n = 1..10011
• Kevin Ryde, PARI/GP Code

Crossrefs

Cf. A120245, A120246.

Programs

PARI

\\ See links.

Extensions

Extended by Ray Chandler, Jun 19 2006