A068962 Number of successive terms of A028356 that add to n; or length of n-th term of A028355.

1, 1, 1, 1, 2, 3, 2, 4, 3, 4, 5, 5, 5, 5, 6, 7, 7, 7, 7, 8, 9, 8, 10, 9, 10, 11, 11, 11, 11, 12, 13, 13, 13, 13, 14, 15, 14, 16, 15, 16, 17, 17, 17, 17, 18, 19, 19, 19, 19, 20, 21, 20, 22, 21, 22, 23, 23, 23, 23, 24, 25, 25, 25, 25, 26, 27, 26, 28, 27, 28, 29, 29, 29, 29, 30, 31, 31

Offset

1,5

References

Suggested by R. K. Guy, Mar 01, 2002.

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

Formula

Each group of 15 terms is 6 more than the previous group.

Conjectures from Chai Wah Wu, Apr 18 2024: (Start)

a(n) = a(n-1) + a(n-15) - a(n-16) for n > 16.

G.f.: x*(x^14 + x^10 + x^9 - x^8 + 2*x^7 - x^6 + x^5 + x^4 + 1)/(x^16 - x^15 - x + 1). (End)

Crossrefs

Cf. A028355, A028356.

Sequence in context: A076753 A352576 A245134 * A036380 A241054 A257907

Adjacent sequences: A068959 A068960 A068961 * A068963 A068964 A068965

Keyword

nonn,easy,changed

Author

N. J. A. Sloane, Apr 08 2002

Extensions

More terms from Jim McCann (jmccann(AT)umich.edu), Jul 16 2002

Status

approved