A083279 Length of odd/even runs in A061419, where a(2n)=length of n-th run of even numbers in A061419 and a(2n-1)=length of n-th run of odd numbers.

1, 1, 2, 3, 2, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 5, 2, 1, 1, 7, 1, 1, 5, 2, 2, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 2, 4, 1, 2, 1, 6, 1, 1, 5, 2, 1, 2, 1, 1, 1, 2, 2, 1, 2, 4, 3, 2, 3, 3, 1, 4, 1, 1, 2, 1, 1, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 8, 1, 1, 1, 1, 5

Offset

1,3

Comments

Parity of A061419(n) can be fully reconstructed from this sequence.

Links

Table of n, a(n) for n=1..93.

Prog

(PARI) p=1; c=0; r=0; for(n=1, 1000, p=p+ceil(p/2);  if(p%2==r, c=c+1, print1(c", "); r=!r; c=1))

Crossrefs

Sequence in context: A129385 A217983 A096626 * A306239 A159455 A105734

Adjacent sequences: A083276 A083277 A083278 * A083280 A083281 A083282

Keyword

nonn,easy

Author

Ralf Stephan, Jun 02 2003

Status

approved