A116070 The digits of pi(n)=A000720(n) are obtained by adding pairs of adjacent digits of n.

15, 27, 226, 227, 334, 441, 2107, 3132, 5172, 10231, 40203, 50136

Offset

1,1

Links

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

Example

50136 belongs, since pi(50136)=5149 and (5+0)=5, (0+1)=1, (1+3)=4 and
(3+6)=9.

Crossrefs

Cf. A000720, A115999.

Sequence in context: A087719 A174216 A249874 * A186074 A230649 A229195

Adjacent sequences: A116067 A116068 A116069 * A116071 A116072 A116073

Keyword

nonn,base,fini,more

Author

Giovanni Resta, Feb 13 2006

Status

approved