A090501 Group the natural numbers as in A090499; sequence gives the number of members in each group.

1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 4, 5, 5, 5, 6, 6, 8, 8, 8, 9, 9, 10, 11, 10, 11, 12, 13, 13, 14, 14, 16, 15, 15, 16, 16, 18, 18, 19, 18, 19, 20, 20, 22, 22, 22, 24, 24, 25, 23, 24, 24, 28, 26, 28, 27, 27, 26, 28, 30, 30, 31, 29, 31, 30, 31, 32, 34, 33, 33, 34, 34, 37, 35, 37, 36, 37

Offset

1,3

Links

Table of n, a(n) for n=1..76.

Formula

a(n) = A090499(n+1)-A090499(n). - David Wasserman, Dec 08 2005

Crossrefs

Cf. A090499, A090500.

Sequence in context: A306921 A048686 A278959 * A361385 A126848 A232753

Adjacent sequences: A090498 A090499 A090500 * A090502 A090503 A090504

Keyword

nonn

Author

Amarnath Murthy, Dec 05 2003

Extensions

More terms from David Wasserman, Dec 08 2005

Status

approved