A156768 a(1)=2, a(n+1) is the smallest prime > n + smallest digit of n-th prime*smallest digit of n.

2, 5, 11, 19, 37, 11, 13, 17, 17, 29, 11, 13, 17, 17, 19, 23, 23, 23, 23, 29, 23, 29, 37, 31, 41, 41, 29, 29, 29, 31, 31, 37, 37, 37, 41, 41, 41, 41, 43, 43, 41, 43, 47, 47, 53, 53, 53, 53, 59, 59, 53, 59, 59, 59, 59, 67, 67, 71, 67, 71, 61, 67, 67, 67, 71, 71, 73, 79, 89, 89

Offset

1,1

Links

Table of n, a(n) for n=1..70.

Example

2, 3(=3=1+2*1), 11(>8=2+3*2), 7(=7=3+1*4), 37(>32=4+7*4), etc.

Crossrefs

Cf. A000040, A156672.

Sequence in context: A084572 A040105 A319859 * A134694 A121606 A166164

Adjacent sequences: A156765 A156766 A156767 * A156769 A156770 A156771

Keyword

nonn,base,less

Author

Juri-Stepan Gerasimov, Feb 15 2009

Extensions

Corrected by R. J. Mathar, Feb 26 2009

Status

approved