A061521 a(0) = 1; a(n) is obtained by incrementing each digit of a(n-1) by 6.

1, 7, 13, 79, 1315, 79711, 13151377, 79711791313, 1315137713157979, 797117913137971113151315, 1315137713157979131513777971179711, 797117913137971113151315797117913131315137713151377, 131513771315797913151377797117971113151377131579797971179131379711791313

Offset

0,2

Comments

In A061511-A061522, A061746-A061750 when the incremented digit exceeds 9 it is written as a 2-digit string. So 9+1 becomes the 2-digit string 10, etc.

Links

Table of n, a(n) for n=0..12.

Mathematica

NestList[FromDigits[Flatten[IntegerDigits/@(IntegerDigits[#]+6)]]&, 1, 15] (* Harvey P. Dale, May 21 2015 *)

Crossrefs

Sequence in context: A177163 A378512 A268350 * A362246 A073220 A110455

Adjacent sequences: A061518 A061519 A061520 * A061522 A061523 A061524

Keyword

base,nonn

Author

Amarnath Murthy, May 08 2001

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), May 11 2001

a(5)-a(12) corrected by Harvey P. Dale, May 21 2015

Status

approved