

A109635


Sum of prime(n) and nth digit of Pi after the decimal point.


1



3, 7, 6, 12, 20, 15, 23, 24, 26, 34, 39, 46, 48, 52, 50, 55, 62, 69, 71, 77, 75, 85, 87, 92, 100, 109, 106, 109, 116, 122, 132, 131, 139, 147, 157, 155, 158, 172, 174, 174, 185, 190, 194, 202, 206, 202, 218, 228, 228, 229, 238, 247, 243, 251, 266, 270, 273, 280
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OFFSET

1,1


COMMENTS

In some cases n resembles the prime number in the subsequent prime row. Some slight intervals can be observed: for example 599(593+6) to 641(641+0) to 691(683+8) to 743(743+0) to 809(811+2), each 8 rows apart and 3 instances 10 rows apart.


LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..1000


FORMULA

a(n) ~ n log n.


EXAMPLE

The first column gives the primes, the second column the digits of Pi and the third column their sum.
2 1 3
3 4 7
5 1 6
7 5 12
...


CROSSREFS

Sequence in context: A117823 A178242 A070882 * A095360 A175142 A318466
Adjacent sequences: A109632 A109633 A109634 * A109636 A109637 A109638


KEYWORD

nonn,base,less


AUTHOR

E.J.P. Vening, Aug 03 2005


STATUS

approved



