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A109635 Sum of prime(n) and n-th 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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified January 26 20:11 EST 2020. Contains 331288 sequences. (Running on oeis4.)