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A211006 Pair (n,p) where n is the sum of adjacent nonprimes and p is the sum of adjacent primes. 2
1, 5, 4, 5, 6, 7, 27, 11, 12, 13, 45, 17, 18, 19, 63, 23, 130, 29, 30, 31, 170, 37, 117, 41, 42, 43, 135, 47, 250, 53, 280, 59, 60, 61, 320, 67, 207, 71, 72, 73, 380, 79, 243, 83, 430, 89, 651, 97, 297, 101, 102, 103, 315, 107, 108, 109, 333, 113, 1560, 127, 387, 131 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..62.

FORMULA

a(n) = A109921(n+2), n >= 3.

EXAMPLE

-----------------------------------------

.     Array from

n      A000027                      a(n)

-----------------------------------------

1         1;                          1

2         2, 3;                       5

3         4;                          4

4         5;                          5

5         6;                          6

6         7;                          7

7         8, 9, 10;                  27

8        11;                         11

9        12;                         12

10       13;                         13

11       14, 15, 16;                 45

12       17;                         17

13       18;                         18

14       19;                         19

15       20, 21, 22;                 63

16       23;                         23

17       24, 25, 26, 27, 28;        130

CROSSREFS

Partial sums give A211007.

A variant of A109921.

Cf. A000040, A018252, A054265, A211005.

Sequence in context: A113784 A021651 A200293 * A069214 A119807 A254181

Adjacent sequences:  A211003 A211004 A211005 * A211007 A211008 A211009

KEYWORD

nonn,tabf

AUTHOR

Omar E. Pol, Aug 11 2012

STATUS

approved

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Last modified July 6 23:56 EDT 2020. Contains 335484 sequences. (Running on oeis4.)