A080703 a(1)=5; for n>1, a(n) = smallest number > a(n-1) such that the condition "if n is in the sequence then a(n) is a multiple of 4" is satisfied.

5, 6, 7, 8, 12, 16, 20, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127

Offset

1,1

Links

Table of n, a(n) for n=1..63.

Formula

{a(a(n))} = {4i : i >= 3}.

Crossrefs

Sequence in context: A047322 A236242 A309102 * A284682 A171405 A047575

Adjacent sequences: A080700 A080701 A080702 * A080704 A080705 A080706

Keyword

nonn,easy

Author

Benoit Cloitre, Mar 01 2003

Extensions

More terms from Matthew Vandermast, Mar 05 2003

Status

approved