A078277 a(n) = A078274(n)/11.

1, 121, 13941, 1577761, 176141581, 1028725268301, 12104701810650121, 139230653737447031941, 1574142902828283083413761, 17559792682830102828719795581, 102963381555591939195556174359301, 1211379362828828501048288283629741121

Offset

1,2

Links

Table of n, a(n) for n=1..12.

Prog

(PARI) a(n) = {my(d, v=[1]); for(i=2, n, v=concat(v, d=digits(2*i-1))); w=Vecrev(v); fromdigits(vector(2*#v, i, if(i%2, v[1+i\2], w[i/2])))/11; } \\ Jinyuan Wang, May 17 2020

Crossrefs

Cf. A078274, A078275, A078276.

Sequence in context: A180153 A178510 A066625 * A178512 A050740 A121013

Adjacent sequences: A078274 A078275 A078276 * A078278 A078279 A078280

Keyword

nonn,base

Author

Amarnath Murthy, Nov 25 2002

Extensions

More terms from Sean A. Irvine, Aug 15 2011

Corrected by Sean A. Irvine, May 30 2013

Status

approved