A092463 Greatest number in the n-th successive group of natural numbers containing exactly n prime powers.

1, 3, 7, 13, 25, 41, 64, 97, 128, 173, 233, 283, 359, 439, 523, 619, 729, 841, 971, 1093, 1249, 1423, 1567, 1733, 1931, 2113, 2309, 2531, 2731, 2969, 3251, 3499, 3733, 4019, 4289, 4621, 4937, 5237, 5569, 5881, 6269, 6637, 6977, 7417

Offset

1,2

Comments

a(n) = A000961(A000217(n)).

Links

Table of n, a(n) for n=1..44.

Example

1 : 2 3 : 4 5 6 7 : 8 9 10 11 12 13 : 14 15 16 17 18 ...
1 : 2 3 : 4 5 . 7 : 8 9 .. 11 .. 13 : .. .. 16 17 ...
1 : . 3 : . . . 7 : . . .. .. .. 13 : .. .. ...
a(1)..a(2)......a(3).............a(4)......

Crossrefs

Sequence in context: A026103 A328652 A301854 * A259343 A210613 A363707

Adjacent sequences: A092460 A092461 A092462 * A092464 A092465 A092466

Keyword

nonn

Author

Reinhard Zumkeller, Mar 25 2004

Status

approved