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A333662 Number of electrons per shell in element Z=n expressed as a 32-bit unsigned integer.

%I A333662 #30 Oct 07 2020 05:36:51
%S A333662 1,2,6,10,14,18,22,26,30,34,98,162,226,290,354,418,482,546,2594,4642,
%T A333662 4706,4770,4834,2914,4962,5026,5090,5154,3234,5282,7330,9378,11426,
%U A333662 13474,15522,17570,148642,279714,281762,283810
%N A333662 Number of electrons per shell in element Z=n expressed as a 32-bit unsigned integer.
%C A333662 This is a memory-efficient way of encoding the number of electrons per shell of all known elements.
%H A333662 Zachary Russ, <a href="/A333662/b333662.txt">Table of n, a(n) for n = 1..118</a>
%H A333662 Wikipedia, <a href="https://en.wikipedia.org/wiki/Electron_configurations_of_the_elements_(data_page)">Electron configurations of the elements (data page)</a>
%e A333662   |-----|------------|------------|----------------------------------------|
%e A333662   |     |            |            |               a(n) [bin]               |
%e A333662   |  n  | a(n) [dec] | a(n) [hex] |           Electrons per Shell          |
%e A333662   |     |            |            |  Q  |  P  |   O  |  N   |  M  |  L | K |
%e A333662   |-----|------------|------------|-----|-----|------|------|-----|----|---|
%e A333662   |   1 |          1 | 0x00000001 | 0000 00000 000000 000000 00000 0000 01 |
%e A333662   |   2 |          2 | 0x00000002 | 0000 00000 000000 000000 00000 0000 10 |
%e A333662   |   3 |          6 | 0x00000006 | 0000 00000 000000 000000 00000 0001 10 |
%e A333662   |   4 |         10 | 0x0000000a | 0000 00000 000000 000000 00000 0010 10 |
%e A333662   |   5 |         14 | 0x0000000e | 0000 00000 000000 000000 00000 0011 10 |
%e A333662   |   6 |         18 | 0x00000012 | 0000 00000 000000 000000 00000 0100 10 |
%e A333662   |  .  |     .      |      .     |                    .                   |
%e A333662   |  .  |     .      |      .     |                    .                   |
%e A333662   |  .  |     .      |      .     |                    .                   |
%e A333662   | 113 |  960562338 | 0x394104a2 | 0011 10010 100000 100000 10010 1000 10 |
%e A333662   | 114 | 1228997794 | 0x494104a2 | 0100 10010 100000 100000 10010 1000 10 |
%e A333662   | 115 | 1497433250 | 0x594104a2 | 0101 10010 100000 100000 10010 1000 10 |
%e A333662   | 116 | 1765868706 | 0x694104a2 | 0110 10010 100000 100000 10010 1000 10 |
%e A333662   | 117 | 2034304162 | 0x794104a2 | 0111 10010 100000 100000 10010 1000 10 |
%e A333662   | 118 | 2302739618 | 0x894104a2 | 1000 10010 100000 100000 10010 1000 10 |
%e A333662   |-----|------------|------------|----------------------------------------|
%o A333662 (C++) typedef unsigned char Shell; uint32_t a(Shell s1 = 0x0, Shell s2 = 0x0, Shell s3 = 0x0, Shell s4 = 0x0, Shell s5 = 0x0, Shell s6 = 0x0, Shell s7 = 0x0) {return (uint32_t)s1 + ((uint32_t)s2 << 2) + ((uint32_t)s3 << 6) + ((uint32_t)s4 << 11) + ((uint32_t)s5 << 17) + ((uint32_t)s6 << 23) + ((uint32_t)s7 << 28);}
%Y A333662 Cf. A333997, A168208, A093907.
%K A333662 fini,nonn,full
%O A333662 1,2
%A A333662 _Zachary Russ_, Sep 02 2020