A167761 a(n) = sqrt(A167657(n)).

0, 1, 2, 3, 16, 5, 36, 7, 64, 729, 10, 1331, 144, 13, 196, 3375, 4096, 17, 5832, 361, 20, 9261, 484, 12167, 331776, 625, 26, 729, 28, 841, 21870000000, 961, 32768, 33, 45435424, 35, 46656, 50653, 1444, 59319, 64000, 41, 130691232, 43, 1936, 45

Offset

1,3

Comments

a(n) = prime => A096478(n).

If a(n) = prime => A096478(n). - Giovanni Teofilatto, Nov 12 2009

Links

Table of n, a(n) for n=1..46.

Maple

A000720 := proc(n) numtheory[pi](n) ; end proc: A167761 := proc(nmax) local ol, a ; ol := 0 ; a := 0 ; for n from 1 to nmax do if A000720(n) = ol then a := a*ol ; else printf("%d, ", sqrt(a)) ; a := A000720(n) ; end if; ol := A000720(n) ; end do ; return ; end proc: A167761(260) ; # R. J. Mathar, Jan 30 2010

Crossrefs

Cf. A167657.

Cf. A096478. - Giovanni Teofilatto, Nov 12 2009

Sequence in context: A088447 A326578 A103390 * A364813 A176029 A218323

Adjacent sequences: A167758 A167759 A167760 * A167762 A167763 A167764

Keyword

nonn

Author

Giovanni Teofilatto, Nov 11 2009, corrected Nov 12 2009

Extensions

Previous a(15) removed, a(35) and a(43) corrected by R. J. Mathar, Jan 30 2010

Status

approved